期刊
PLASMA
卷 6, 期 1, 页码 162-180出版社
MDPI
DOI: 10.3390/plasma6010013
关键词
dielectric barrier discharge; equivalent circuit; carbon dioxide conversion; carbon monoxide formation; power-to-gas
A planar volume dielectric barrier discharge (DBD) in pure carbon dioxide (CO2) for the formation of carbon monoxide (CO) is investigated in this study. The influence of electrode type, barrier material, barrier thickness, and discharge gap on plasma power and CO formation is systematically analyzed. The stackable discharge arrangement enables the elucidation of the influence of parasitic capacitances, which can be overlooked in the application of plasma sources. The determination of discharge voltage and the validity of the Manley power equation are revised to account for non-uniform coverage and parasitic capacitances.
A planar volume dielectric barrier discharge (DBD) in pure carbon dioxide (CO2) for the formation of carbon monoxide (CO) is examined by combined electrical and CO density measurements. The influence of the type of electrode, the barrier material, the barrier thickness, and the discharge gap on the plasma power and the CO formation is analyzed systematically. The electrical characterization by means of charge-voltage plots is based on the simplest equivalent circuit model of DBDs, extended by the so-called partial surface discharge effect and the presence of parallel parasitic capacitances. The stackable discharge arrangement in this study enables one to elucidate the influence of parasitic capacitances, which can be overlooked in the application of such plasma sources. The determination of the discharge voltage from charge-voltage plots and the validity of the so-called Manley power equation are revised by taking into account non-uniform coverage as well as parasitic capacitances. The energy yield (EY) of CO is analyzed and compared with the literature. No correlations of EY with the mean reduced electric field strength or the geometric parameters of the DBD arrangement are observed.
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